Thanks so much for all the input. My main concern for this project is that per local ordinances, my post-developed runoff must be <= predeveloped+10%. For my detention basin design I am taking into account the entire drainage area. However, I'm still not quite sure how to remove the water that...
What I'm not sure how to handle is:
1)When the drainage basin starts outside of the project limits, does that still count as site runoff? Do I compute the whole area then knock down the site drainage by the % outside my limits?
and on the flip side of that...
2)When the project limits cuts off a...